Hot Rolled Steel Round Bar 6mm-150mm System 1

Hot Rolled Steel Round Bar 6mm-150mm

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: 100000 m.t./month

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Specifications of Chinese Standard Round Bar

1. Grade: Q195, Q235, Q345

2. Diameter: 6mm-150mm

3. Length: 6m, 9m, 12m or as customer’s request

4. Tolerance: Within ±5% for weight; ±2mm for diameter

5. Note: The price can be better is the quantity is good

6. Chemical composition

Alloy No	Element (%)
Alloy No	C	Mn	S	P	Si
Q195	0.06-0.12	0.25	≤0.05	≤0.045	≤0.3
Q235	0.12—0.20	0.3—0.7	≤0.045	≤0.045	≤0.3
Q345	≤0.2	1.00-1.60	≤0.045	≤0.045	≤0.55

Usage and Applications of Chinese Standard Round Bar

1. Chinese standard steel bar is often used where large amounts of steel need to be formed, for example as structural steel.

2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.

3. Steel round bar is used in construction and a large number of architectural and engineering structures.

Packaging & Delivery of Chinese Standard Round Bar

Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.

Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.

Production Flow of Chinese Standard Round Bar

1. The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process.

2. Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation

Characteristics of Chinese Standard Round Bar

1. The steel in which the main interstitial alloying constituent is carbon in the range of 0.12–2.0%.

2. As the carbon percentage content rises, steel has the ability to become harder and stronger through heat treating; however it becomes less ductile.

3. Quality should be in conformity with the specification of the manufacturer. Quantity and packing conditions should be in conformity with the term in the contract.

4. Regardless of the heat treatment, higher carbon content reduces weld ability. In carbon steels, the higher carbon content lowers the melting point.

Chinese Standard Round Bar

Q: What is the difference between a rough turned and a hot rolled steel round bar?: The manufacturing processes and resulting properties of a rough turned steel round bar and a hot rolled steel round bar differ. To produce a rough turned steel round bar, a steel billet or ingot is heated to a high temperature and then subjected to rough machining processes. This involves removing excess material from the surface to achieve the desired size and shape. The result is a slightly smoother surface compared to the hot rolled bar, although there may still be some minor imperfections. Rough turned bars are often used when a smoother surface finish is required, such as in machining operations. On the other hand, a hot rolled steel round bar is manufactured by heating a steel billet or ingot to extremely high temperatures and passing it through a series of rolling mills. This hot rolling process involves compressing the steel bar between rotating rolls, which reduces the thickness and increases the length. As a result, hot rolled bars have a rough, scaled surface with variations in diameter along their length. This textured surface provides excellent adherence for paint, coatings, or further processing. Hot rolled bars are commonly used in construction, manufacturing, and structural applications where mechanical properties like strength and durability are important. To summarize, the main difference between a rough turned and a hot rolled steel round bar lies in their manufacturing processes and surface finish. Rough turned bars undergo rough machining for a smoother surface, while hot rolled bars are formed through high-temperature rolling, resulting in a rough, scaled surface. The choice between these two types of bars depends on the specific application and the desired properties, such as surface finish, strength, and adherence.

Q: What are the different types of steel round bar surface coatings?: There are several different types of steel round bar surface coatings that are commonly used to enhance the performance and durability of the steel. These coatings provide a protective layer to prevent corrosion and improve the overall appearance of the steel round bar. Some of the most common types of steel round bar surface coatings include: 1. Galvanized Coating: This coating involves applying a layer of zinc to the steel round bar. It provides excellent corrosion resistance and is commonly used in outdoor applications where the steel is exposed to moisture and other harsh environmental conditions. 2. Powder Coating: Powder coating involves applying a dry powder to the steel round bar and then curing it under heat. This coating provides a durable and attractive finish, which is resistant to chipping, scratching, and fading. Powder coating is available in a wide range of colors and textures, making it a popular choice for decorative applications. 3. Epoxy Coating: Epoxy coating is a type of thermosetting polymer that is applied as a liquid and then cured to form a protective layer. It provides excellent corrosion resistance and chemical resistance, making it suitable for applications in harsh environments. Epoxy coatings are commonly used in industries such as oil and gas, marine, and chemical processing. 4. Chrome Plating: Chrome plating involves electroplating a layer of chromium onto the steel round bar. This coating provides a high level of corrosion resistance and enhances the appearance of the steel. Chrome plating is commonly used in applications where both corrosion protection and aesthetics are important, such as automotive parts and decorative hardware. 5. Nickel Plating: Nickel plating is similar to chrome plating but involves electroplating a layer of nickel onto the steel round bar. This coating provides excellent corrosion resistance and is commonly used in applications where the steel is exposed to harsh chemicals or extreme temperatures. These are just a few examples of the different types of steel round bar surface coatings available. The choice of coating depends on the specific requirements of the application, including the level of corrosion resistance, chemical resistance, and aesthetic appeal needed. It is important to select the appropriate coating based on the intended use of the steel round bar to ensure optimal performance and longevity.

Q: What is the maximum weight capacity of a steel round bar?: The maximum weight a steel round bar can hold depends on several factors, including its diameter, length, grade, and type of steel. Steel round bars are available in various sizes and grades, each with its own load-bearing capacity. To determine the maximum weight a steel round bar can handle, you need to calculate its cross-sectional area using the formula: Area = π * (diameter/2)^2. Here, π represents a mathematical constant that is approximately equal to 3.14159. Once you have the cross-sectional area, you can estimate the weight of the bar by multiplying it with the density of the specific steel grade. The density of steel varies based on the grade, but as a general approximation, it is around 7850 kilograms per cubic meter (or 0.00785 grams per millimeter cubed). However, it's important to remember that weight capacity alone may not be the only factor to consider for the safe use of a steel round bar. Other factors like load distribution, applied forces, and the structural integrity of the bar are equally important to ensure safe operation. For accurate weight capacity information for a specific steel round bar, it is recommended to refer to the manufacturer's specifications or consult a qualified engineer or professional who can provide precise calculations based on the specific requirements and characteristics of the steel round bar in question.

Q: What is the maximum temperature steel round bars can withstand?: The maximum temperature that steel round bars can withstand varies depending on the specific grade of steel. However, in general, most steel round bars can withstand temperatures up to around 1000 to 1200 degrees Celsius (1832 to 2192 degrees Fahrenheit) without significant loss of structural integrity. It is important to note that prolonged exposure to high temperatures can lead to a reduction in the strength and hardness of the steel, as well as potential dimensional changes and distortion. Additionally, the specific properties and behavior of steel at high temperatures can also be influenced by factors such as alloy composition, heat treatment, and the presence of other elements or impurities. For applications requiring steel round bars to withstand extremely high temperatures beyond the typical range, specialized high-temperature steels, such as heat-resistant or creep-resistant alloys, may be used. These alloys are specifically designed to maintain their mechanical properties and structural integrity at elevated temperatures, often up to several thousand degrees Celsius.

Q: Can steel round bars be used for making kitchen utensils?: Yes, steel round bars can be used for making kitchen utensils. Steel is a strong and durable material that is commonly used in the production of kitchen utensils due to its resistance to corrosion, heat, and chemical damage. Steel round bars can be easily shaped and molded into various utensils such as spoons, forks, knives, and ladles. Additionally, steel utensils are non-reactive, which means they do not leach harmful substances into food, making them a safe choice for cooking and food preparation.

Q: What are the applications of steel round bars in the aerospace industry?: Steel round bars have various applications in the aerospace industry, primarily due to their high strength-to-weight ratio and excellent resistance to corrosion. They are commonly used in the construction of aircraft frames, landing gear components, and engine parts. Additionally, steel round bars are employed in the production of critical structural elements, such as wing spars and fuselage sections, ensuring the durability and safety of aerospace vehicles.

Q: How do steel round bars compare to fiberglass round bars?: Steel round bars and fiberglass round bars have different properties and applications, making them suitable for various purposes. Steel round bars are known for their high strength and durability. They are commonly used in construction, manufacturing, and engineering industries, where strength and load-bearing capacity are crucial. Steel round bars can withstand heavy loads, making them ideal for structural applications such as beams, columns, and supports. Additionally, steel round bars have excellent resistance to impact, wear, and corrosion, making them suitable for outdoor and high-stress environments. On the other hand, fiberglass round bars offer unique advantages. Fiberglass is a lightweight and non-conductive material, making it suitable for applications where electrical conductivity or weight is a concern. Fiberglass round bars are commonly used in the electrical and telecommunications industries, where they provide insulation and safety. They are also resistant to corrosion, making them suitable for outdoor and marine applications. In terms of cost, steel round bars are generally more affordable compared to fiberglass round bars. Steel is a widely available material, and its production costs are relatively low. Fiberglass, on the other hand, requires specialized manufacturing processes and materials, which can increase its cost. Ultimately, the choice between steel and fiberglass round bars depends on the specific requirements of the application. If strength, durability, and load-bearing capacity are critical, steel round bars are an excellent choice. However, if weight, electrical insulation, or corrosion resistance are important considerations, fiberglass round bars may be more suitable.

Q: Can steel round bars be used for making security grilles?: Certainly! Security grilles can be made using steel round bars. Steel, being a sturdy and durable material, offers excellent protection for windows and doors. By welding round bars together, a robust framework for the security grilles can be created. Moreover, steel round bars are highly customizable and can be shaped to fit any size or design requirement, making them suitable for various types of security grilles. The hardness and toughness of steel also make it resistant to cutting or tampering, thereby enhancing the security features of the grilles. All in all, steel round bars are a dependable option for creating security grilles due to their strength, durability, and customization capabilities.

Q: Can steel round bars be used for making kitchen utensils?: Kitchen utensils can indeed be made using steel round bars. Steel, being a robust and long-lasting material, is frequently employed in the manufacturing of kitchen utensils because of its ability to withstand corrosion, heat, and chemical harm. By effortlessly shaping and molding steel round bars, they can be transformed into a variety of utensils like spoons, forks, knives, and ladles. Moreover, steel utensils are non-reactive, ensuring that they do not release any harmful substances into food, thereby offering a safe option for cooking and food preparation.

Q: What kind of steel pipe is round steel?: A round bar is not a steel tube. In brief, its section is round, but it is solid, and the cross section of the pipe is hollow.

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